6J9P-E Preamp
*Alle Widerstände 1 W Metallfilm ausser an der Anode und G2 in 2 Watt MOX Ausführung als Mindestbelastbarkeit.
Verbaut wurden zum Beispiel 12K/7W weil es gerade vorrätig war.
Die Spannungsfestigkeit der Kondensatoren darf 250V nicht unterschreiten.
Korrekturmaßnahme im laufenden Betrieb: Die Spannung an der Anode beträgt exakt 151VDC anstatt der angegebene 175VDC. Das Schaltbild ist korrekt. Das Siebkette schaut folgend aus... CRCRC: 33uF/2,2K/100uF/12K/100uF und dem Netztrafo von Jan Wüsten 201 mit EZ81.
Infos zur 6J9P-E
The 6J9P-E (6Ж9П-Е) high-frequency steep-characteristic pentode has been designed for use in input stages of wide-band amplifiers of electronic devices.
Cathode: indirectly heater, oxide-coated.
The 6J9P-E pentodes are resistant to ambient temperature from -45 to +70°C and relative humidity of 95 to 98% at +25°C, as well as to vibration with an acceleration (from 1 to 60Hz) of 2 g.
All tubes new, military equipment and have "OTK" mark. Near equivalent: E180F and 6688.
The tube is manufactured by the Oktjbr', Vinnitsa, Ukraine.
Symbol "E" - long life.
General characteristics:
Type: 6J9P-E
Filament voltage, V: 6,3 ± 0,6
Filament current, mA: 300 ± 15
Anode voltage nominal, V: 150
Anode voltage limit, V: 250
Anode voltage limit (constant) in a locked tube (anode current up to 5 mA), V: 300
Anode, mA: 15 ± 4
Cathode current limit, mA: 35
Voltage grid of the first limit, V: -100
Backlash of the first (note 2) when the voltage across it
minus 2, uA: 0.3
Second nominal grid voltage, V: 150
A second threshold voltage grid, V: 160
A second threshold voltage grid (constant) for the closed tube (anode current up to 5 mA), V: 300
Second grid current, mA: 4.5
Third grid voltage, V: 0
The power dissipated by the anode, the maximum, W: 3
The power dissipated by the second grid, maximum, W: 0.75
The voltage between the cathode and heater
Limit (DC):
- at a negative potential heater, V: 150
- at a positive potential heater, V: 100
Slope, ma/V: 17,5 ± 3,5
Cut-off voltage of the electron current of the first grid, V: -1.1
The internal resistance, mW: 0.15
Equivalent resistance, ohms: 350
Input impedance at the frequency of 60 MHz, kW: 5
Resistance in the cathode circuit to automatically offset, oHm: 80
Resistance in the grid of the first limit, MOm: 1
Input capacity, pF: 8,5 ± 1
Output capacity, pF: 3,0 ± 0,5
Capacity-through, pF: 0.03
Capacitance cathode - heater, pF: 7
Design: miniature glass
Weight, g: 15
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